CN103691312A - Efficient secondary dust removal, desulfurization and denitrification integrated flue gas purification plant - Google Patents
Efficient secondary dust removal, desulfurization and denitrification integrated flue gas purification plant Download PDFInfo
- Publication number
- CN103691312A CN103691312A CN201310684175.4A CN201310684175A CN103691312A CN 103691312 A CN103691312 A CN 103691312A CN 201310684175 A CN201310684175 A CN 201310684175A CN 103691312 A CN103691312 A CN 103691312A
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- Prior art keywords
- desulfurization
- catalyst
- flue gas
- bubbling
- spray
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 7
- 230000023556 desulfurization Effects 0.000 title claims abstract description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims description 14
- 239000003546 flue gas Substances 0.000 title claims description 14
- 238000000746 purification Methods 0.000 title claims description 7
- 239000000428 dust Substances 0.000 title abstract 2
- 239000003054 catalyst Substances 0.000 claims abstract description 20
- 238000010521 absorption reaction Methods 0.000 claims abstract description 16
- 230000005587 bubbling Effects 0.000 claims abstract description 10
- 239000007921 spray Substances 0.000 claims abstract description 6
- 239000000779 smoke Substances 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 7
- 238000010410 dusting Methods 0.000 claims description 4
- 239000007791 liquid phase Substances 0.000 claims description 4
- 230000002745 absorbent Effects 0.000 claims description 3
- 239000002250 absorbent Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 239000003344 environmental pollutant Substances 0.000 claims 1
- 231100000719 pollutant Toxicity 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000003647 oxidation Effects 0.000 abstract description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 239000000443 aerosol Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
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- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention relates to a desulfurization, denitrification and secondary dust removal integrated device, by combining a low temperature (110-180 DEG C) condition reduction catalyst and a low temperature (150-250 DEG C) condition oxidation catalyst with a vortex generator for a bubbling type absorption tower. The device has the beneficial effects that 1. The occupation space is about 50% less than that of an SCR (Silicon Controlled Rectifier) spray desulfurization device; 2. about 20 m of lift is decreased and 1/3 of energy is saved; 3. the device is cooled by vortex spray or spray absorption liquid, bubbling absorption is adopted and 25-30% of water is saved compared with that of a spray desulfurization tower; 4. a variety of combined methods can be adopted to meet the strictest national emission control requirements.
Description
Technical field
The present invention relates to field of Environment Protection, be specifically related to the field of purification of Industrial Boiler, kiln gas.
Background technology
In China, development along with Environmental Protection Situation, the gas cleaning of Industrial Boiler, kiln has become the key content that atmosphere is administered, because many factories are long Time Created, do not arrange more space to hold the system of gas cleaning, add the rising of land values, need a kind of more compact mode to arrange the purifier of flue gas.
We know, the conventional desulfurizer of China is spray type desulphurization tower at present, maximum employing calcium method absorption liquid modes, and the subject matter of this method has:
The lift of 1> water is high, is generally 30-40 rice, and water consumption is large, and power consumption is high;
2> aerosol is more serious, and especially the higher aerosol of flue-gas temperature is more serious;
3> generally adopts calcium method to absorb, and system jams, wearing and tearing, fouling are serious, and maintenance cost is high;
4> can not realize many stove one tower structures.
And conventional NH3-SCR denitrating system exists:
Need under high temperature (280 ℃-420 ℃) condition, react, thereby can only under the high ash of high temperature, work, thereby cause catalyst life short, and cannot be merged into desulphurization system the difficulty of integrated system.
Because we are in low temperature (110 ℃-180 ℃) reducing catalyst and the technical breakthrough of low-temperature oxidation catalyst (150 ℃-250 ℃), make the integrated technology of desulphurization and denitration there is the possibility breaking through.
Summary of the invention
The present invention utilizes the catalyst of (110 ℃-180 ℃) work under cryogenic conditions, by vortex generator or rotation air exhausting device and bubbling absorption column, carry out integrated combination, realization is function of fuel gas purification in same device, comprise: final dusting, desulphurization and denitration etc., can effectively realize the combination of a Lu Yita, two Lu Yita, three Lu Yita, four stove one towers, can effectively reduce and take up an area space, and can realize multilayer with liquid-phase catalyst combination purifies, improve total purification efficiency, meet present stage and following gas cleaning requirement.
technical scheme
Technical solution of the present invention comprises: tower body, low-temperature denitration catalyst, vortex mixer or ventilating fan, bubbling absorption column, smoke collection pipe, V-type cover-screen cloth locking device, demister, rotary demist air-introduced machine etc. partly form.
The function of low temperature catalyst is denitrating flue gas, and is oxidized unburned hydro carbons in flue gas, comprises the material of dioxin.
Vortex mixer comprises that vortex generator and sprayer form, and flue gas efficiently mixes through vortex mixer and absorbent mist, absorbs a large amount of SO
2with the NO through oxidation, and to bubbling pipe, apply the pressure of forward, and give flue gas cool-down, make it to be less than 80 ℃, avoid high-humidity gas fume to return simultaneously and alter the function that affects catalyst, also can realize above-mentioned functions (as Fig. 2) with rotary rowed wind apparatus
Mixed flue gas enters absorption tower Xia Cang through bubbling pipe, after the water-soluble absorption of absorbent, from smoke collection pipe, rises.
V-type cover-screen cloth locking device, the escaping of ammonia that can be used in the locking ammonia process of desulfurization, also can be used as the facility of further purifying smoke, comprises and being used in combination of liquid-phase catalyst.
Rotary demist air-introduced machine act as further removal water smoke and aerosol, utilize centrifugal force to make droplet get rid of to flue sidewall and flow back in tower, can compensate the uplift force that declines and affect because of flue-gas temperature simultaneously.
Accompanying drawing explanation
Fig. 1 middle desulfurization-denitration-final dusting integrated apparatus:
1-flue; 2-combined type desulphurization denitration column for smoke purification; 3-current equalizer; 4-catalyst; 5-vortex generator; 6-eddy current mixing chamber; 7-bubbling pipe; 8-agitator; 9-oxidation fan; 10-is oxidized airduct; 11-is containing the tourie of liquid-phase catalyst; 12-V type cover-sieve tray locking device; 13-demister; The rotary demist air-introduced machine of 14-; 15-absorption liquid.
Fig. 2 offset desulfurization-denitration-final dusting integrated apparatus:
1-gas approach; 2-current equalizer; 3-catalyst; 4-heat exchanger; 5-ventilating fan; 6-shower; 7-bubbling pipe; 8-agitator; 9-absorption liquid; 10-V type cover-sieve tray locking device; 11-demister; The rotary demist air-introduced machine of 12-; 13-exhaust pass.
The specific embodiment
Comprise two kinds of basic modes of middle and offset, the mode of the shared centralized smoke pipe of utilization can form the utilization combination of many stove one towers.Middle structure, as figure, can be separated with dividing plate common suction hold to middle deck dividing plate through catalyst from flue, centralized smoke pipe and superstructure, realize many stove one towers, a defect of this structure is to partially absorb liquid lift higher (about 20m), need pump into top closure layer; Offset can overcome this defect, but is applicable to the small-sized type of furnace.
In Fig. 1, flue gas is through flue 1, through current equalizer 3 current-sharings, flow through and under vortex generator 5 effects, accelerate after low temperature catalyst 4, in blender 6, fully mix with vaporific absorption liquid, and be pressed in bubbling pipe 7 with absorption liquid 15 in 2 Lower Holds of absorption tower and contact and form water-bath, through centralized smoke pipe, rise, after V-type cover-screen cloth locking device 12 further purifies, through demister 13, rotating under the effect of demist air-introduced machine 14, further demist acceleration enter atmosphere through chimney, the absorption liquid compressed air that compressed air engine 9 is introduced in tower absorbing after flue gas is oxidized, after forming normal salt, discharge.
Fig. 2 offset structural principle is similar to the above, can use in a large number square, rectangular configuration combination, and the comprehensive method of investment is reduced.
Claims (3)
- A catalyst that uses cryogenic conditions reaction with vortex generator or air exhausting device and bubbling absorption column in conjunction with realizing boiler or industrial furnace smoke desulphurization and denitration, demercuration and remove the compact combination that the function such as other oxidisable gas, final dusting forms, vortex generator can compensate atmospheric pressure lost, improve to mix and remove flue gas pollutant efficiency, avoid returning of moist flue gas to leap up simultaneously, with heat exchanger, make flue-gas temperature be reduced to the temperature that adapts to desulfurization simultaneously.
- 2. according to the system (1) described, it is characterized by: the low temperature catalyst that uses solid in same tower body is under vortex generator or air exhausting device effect and bubbling absorption column combination, realize catalyst layer, spraying layer, the purification combination of bubbling water-bath and the multiple denitration of overhead bin locking layer, desulfurization, de-PM and other material.
- 3. according to the system (1) described, it is characterized by: also can utilize liquid-phase catalyst and absorbent to be combined in spray cabin, water-bath cabin and overhead bin and form further purification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310684175.4A CN103691312A (en) | 2013-12-16 | 2013-12-16 | Efficient secondary dust removal, desulfurization and denitrification integrated flue gas purification plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310684175.4A CN103691312A (en) | 2013-12-16 | 2013-12-16 | Efficient secondary dust removal, desulfurization and denitrification integrated flue gas purification plant |
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| CN103691312A true CN103691312A (en) | 2014-04-02 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104437071A (en) * | 2014-12-17 | 2015-03-25 | 曲堂杰 | Hybrid biphase desulfurization/denitrification/dust removal device and desulfurization/denitrification/dust removal method |
| CN105289258A (en) * | 2015-11-12 | 2016-02-03 | 阎君 | Low temperature desulfurizing, dedusting, mercury-removal, oxidation absorption reduction denitration integrated tower and purification technology |
| CN106669396A (en) * | 2017-03-28 | 2017-05-17 | 武汉立为工程技术有限公司 | SCR denitration system for boiler |
| CN109340800A (en) * | 2018-09-17 | 2019-02-15 | 卢俊文 | A kind of boiler afterheat recovering device of desulphurization denitration |
| CN109499353A (en) * | 2018-11-07 | 2019-03-22 | 襄阳泽东化工集团有限公司 | A kind of molten sulphur tail gas decontaminating apparatus |
| CN109966899A (en) * | 2019-05-07 | 2019-07-05 | 华能国际电力股份有限公司 | Trough mixer device for realizing efficient SNCR (selective non-catalytic reduction) denitration of flue gas of pulverized coal fired boiler |
| CN110013765A (en) * | 2019-04-03 | 2019-07-16 | 哈尔滨工程大学 | An integrated device for desulfurization and denitrification of ship tail gas |
| CN114632407A (en) * | 2020-12-15 | 2022-06-17 | 中广核研究院有限公司 | Method for purifying solid waste incineration tail gas |
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| JPH0153085B2 (en) * | 1980-04-18 | 1989-11-13 | Bergwerksverband Gmbh | |
| CN101053748A (en) * | 2007-04-30 | 2007-10-17 | 武汉凯迪电力环保有限公司 | Simultaneously removing various pollutant wet ammonia flue gas cleaning technology and system thereof |
| CN201304321Y (en) * | 2008-02-19 | 2009-09-09 | 孙伟杰 | A closed cycle desulphurization denitration and sulphur reclamation device |
| AT506546B1 (en) * | 2008-04-09 | 2010-08-15 | Karl Reinhard | METHOD FOR CLEANING EXHAUST GAS AND DEVICE FOR IMPLEMENTING THE PROCESS |
| CN102188892A (en) * | 2011-05-13 | 2011-09-21 | 四川君和环保工程有限公司 | Ammonia process for performing desulfurization and denitration on flue gas simultaneously |
| CN202129016U (en) * | 2011-06-27 | 2012-02-01 | 朱岳虎 | Multifunctional desulfurization and denitrification integration device |
| CN102343212A (en) * | 2011-10-11 | 2012-02-08 | 浙江天蓝环保技术股份有限公司 | Denitration process combining co-oxidation of ozone and hydrogen peroxide with wet absorption |
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2013
- 2013-12-16 CN CN201310684175.4A patent/CN103691312A/en active Pending
Patent Citations (7)
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| JPH0153085B2 (en) * | 1980-04-18 | 1989-11-13 | Bergwerksverband Gmbh | |
| CN101053748A (en) * | 2007-04-30 | 2007-10-17 | 武汉凯迪电力环保有限公司 | Simultaneously removing various pollutant wet ammonia flue gas cleaning technology and system thereof |
| CN201304321Y (en) * | 2008-02-19 | 2009-09-09 | 孙伟杰 | A closed cycle desulphurization denitration and sulphur reclamation device |
| AT506546B1 (en) * | 2008-04-09 | 2010-08-15 | Karl Reinhard | METHOD FOR CLEANING EXHAUST GAS AND DEVICE FOR IMPLEMENTING THE PROCESS |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104437071A (en) * | 2014-12-17 | 2015-03-25 | 曲堂杰 | Hybrid biphase desulfurization/denitrification/dust removal device and desulfurization/denitrification/dust removal method |
| CN105289258A (en) * | 2015-11-12 | 2016-02-03 | 阎君 | Low temperature desulfurizing, dedusting, mercury-removal, oxidation absorption reduction denitration integrated tower and purification technology |
| CN106669396A (en) * | 2017-03-28 | 2017-05-17 | 武汉立为工程技术有限公司 | SCR denitration system for boiler |
| CN109340800A (en) * | 2018-09-17 | 2019-02-15 | 卢俊文 | A kind of boiler afterheat recovering device of desulphurization denitration |
| CN109499353A (en) * | 2018-11-07 | 2019-03-22 | 襄阳泽东化工集团有限公司 | A kind of molten sulphur tail gas decontaminating apparatus |
| CN110013765A (en) * | 2019-04-03 | 2019-07-16 | 哈尔滨工程大学 | An integrated device for desulfurization and denitrification of ship tail gas |
| CN109966899A (en) * | 2019-05-07 | 2019-07-05 | 华能国际电力股份有限公司 | Trough mixer device for realizing efficient SNCR (selective non-catalytic reduction) denitration of flue gas of pulverized coal fired boiler |
| CN109966899B (en) * | 2019-05-07 | 2024-01-26 | 华能国际电力股份有限公司 | Groove type mixer device for realizing efficient SNCR denitration of pulverized coal boiler flue gas |
| CN114632407A (en) * | 2020-12-15 | 2022-06-17 | 中广核研究院有限公司 | Method for purifying solid waste incineration tail gas |
| CN114632407B (en) * | 2020-12-15 | 2023-06-02 | 中广核研究院有限公司 | Method for purifying solid waste incineration tail gas |
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Application publication date: 20140402 |